A little while ago I changed the name of a one of my clients websites in ISP manager --> Sites --> www.sitename.com

All seemed to work ok (eg the new site name worked for apache), but email was being rejected.

If, under the old site i had the user name bob, then his email was [email protected]. When I changed the domain name, I looked under the user tab, and ISPconfig changed everything to the newsite.com, ie. [email protected].

So, if I change my domain name in managment --> server --> settings, will i still be able to receive email? I noticed that incoming email is first checked to see if the user exists(eg [email protected]), then it delivers it using the domain name i specified in server --> settings ([email protected]).

So, if I change my domain name in managment --> server --> settings, will i still be able to receive email? I noticed that incoming email is first checked to see if the user exists(eg [email protected]), then it delivers it using the domain name i specified in server --> settings ([email protected]).

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No, this setting has nothing to do with postfix.

Please make sure that you edit the co-domain from oldsite.com to newsite.com on the co-domain tab too and not just the main website domain.